<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import * as echarts from "echarts";
require("echarts/theme/macarons"); // echarts theme
import resize from "./mixins/resize";
import { getSupplyType, getSupplyDemandCount } from "@/api/charts";

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: "chart",
    },
    width: {
      type: String,
      default: "100%",
    },
    height: {
      type: String,
      default: "300px",
    },
    type: {
      type: String,
    },
  },
  data() {
    return {
      chart: null,
      chartData: [],
      chartLegendData: [],
    };
  },
  mounted() {
    this.$nextTick(async () => {
      await this.getData();
      this.initChart();
    });
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  methods: {
    async getData() {
      const api = this.type === "1" ? getSupplyType : getSupplyDemandCount;
      const { data } = await api();
      this.chartData = data.map((i) => {
        return {
          name: i.label,
          value: i.value,
        };
      });
      this.chartLegendData = data.map((i) => i.label);
    },
    initChart() {
      this.chart = echarts.init(this.$el, "macarons");

      this.chart.setOption({
        tooltip: {
          trigger: "item",
          formatter: "{a} <br/>{b} : {c} ({d}%)",
        },
        legend: {
          left: "center",
          bottom: "10",
          data: this.chartLegendData,
        },
        series: [
          {
            name: "供应类型占比",
            type: "pie",
            roseType: "radius",
            radius: [15, 95],
            center: ["50%", "38%"],
            data: this.chartData,
            animationEasing: "cubicInOut",
            animationDuration: 2600,
          },
        ],
      });
    },
  },
};
</script>
